Composition for coloring leathers.



- UNITED STATES PATENT OFFICE.

GEORGE WALTER BOYCE, 0F BROOKLYN, NEW YORK.

COMP OSITION FOR COLORING LEATHERS.

No Drawing.

My invention relates to new and useful improvements in compounds for coloring leather and the object of my invention is to provide a composition which may be used with equal effectiveness upon either new .or old leather.

A further object of my invention is to provide a coloring composition which will not only color the leather and give it a pleasing gloss but will also soften the leather and render it more pliable. And a still further object of my invention is to provide a coloring composition in which are incorporated certain odoriferous or essential oils which counteract the natural odor of the leather.

I have formed my composition by incorporating with suitable vehicles, a color, certain elements for softening the leather, a binder, and essential oils for giving the leather a pleasing odor.

It will of course be understood that various ingredients may be employed in obtaining the desired result and that, although the following is my preferred manner of forming the composition, I do not wish to limit myself unnecessarily to the specific elements included therein.

In forming my improved composition I employ: turpentine 1 qt., benzin 1 pt., color ground in japan 1. lbs, sodium chlorid or common salt oz., powderedalum 2 oz., corn starch 1 1b., boiled linseed oil 1 pt., copal varnish 1 pt., oil of birch 2 ii. 02., oil

Specification of Letters Patent.

Patented May 16, 1916.

Application filed March 21, 1912. Serial No. 685,222.

of sassafras 2 ii. oz. The above forming approximately one gallon of the compound.

All the above ingredients are thoroughly mixed and the composition thus formed may be applied to the leather with a brush or sponge, or if preferred the leather may be dipped in the liquid. In the above compound the turpentine and benzin form the vehicle of the coloring matter, the starch and boiled oil soften the leather and prevent its cracking, the varnish acts as a binder and also gives the leather the desired gloss, and the oil of birch and oil of sassafras give the leather a pleasing odor.

The coloring matter referred to above is merely any suitable color ground in japan as that forms a finer .color than if merely dry colors were used. It is well known that starch, when wet, is very slippery and it will therefore be seen that if the starch in the above mixture be kept moist, drying and cracking of leather treated with the compound will be prevented. Although boiled linseed oil is usually considered a drying oil, the mixture of this oil with the starch prevents drying of the starch and consequently keeps the leather treated soft and pliable.

. What I claim is A leather coloring composition comprising a pigment, one quart of turpentine'and one pint of benzin as vehicles, a softening substance comprising a mixture of one pound of starch and one pint of boiled linseed oil, two ounces of salt and two ounces of powdered alum for rendering the pigment insoluble and one pint of copal varnish.

In testimony whereof, I affix my signature, inpresence of'two witnesses.

GEORGE WALTER BOYCE. 

